• Dyness Tower 3.55kWh batterij unit
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Dyness Tower S3 3.55 kWh Battery Module (HV9637S)

€657,03 incl. 21% VAT
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The Dyness Tower S3 3.55 kWh battery module (HV9637S) is the modular expansion unit of the Dyness Tower S3 high-voltage (HV) energy storage system. With a nominal voltage of 96V DC and proven LiFePO4 cell chemistry, this module delivers maximum system efficiency with minimal conversion losses — ideal for anyone looking to scale their home battery storage step by step to meet their exact energy requirements.

  • 3.55 kWh high-voltage module: Nominal voltage 96V DC, capacity 37Ah — for high efficiency across the entire battery chain.
  • Wirelessly stackable (Plug & Play): Blind insertion pins eliminate all internal cabling between modules entirely.
  • IP54 protection rating: Dust and splash-water resistant — suitable for indoor and sheltered outdoor installations.
  • Up to 6,000 charge cycles: Certified LFP quality with exceptional operational lifespan (CE-EMC, IEC62619, UN38.3).

Suitable for

  • Expanding existing Dyness Tower S3 systems
  • New high-voltage home battery installations
  • Residential energy storage with scalable capacity
  • Installations with future expansion requirements

Dyness Tower S3 3.55 kWh battery module — specifications and benefits

  • Fast installation: Advanced wireless stacking system with blind insertion pins — no internal cabling between modules required.
  • Intrinsic safety: Thermally stable lithium iron phosphate cells (LFP) — non-toxic, non-flammable, fully RoHS-compliant.
  • Minimal transmission losses: The 96V high-voltage architecture reduces internal losses across the entire battery chain through higher voltage at equal power transfer.
  • Direct system integration: Engineered for seamless communication and physical coupling with the Dyness Tower S3 BDU controller.
Technical Attribute Value
Model Dyness Tower S3 HV9637S
Nominal Energy 3.552 kWh
Nominal Voltage 96V DC
Voltage Range 84V – 108V DC
Nominal Capacity 37Ah
Dimensions (W × D × H) 504 × 380 × 240 mm
Net Weight 40 kg
Protection Class IP54
Certifications CE-EMC, CE-RED, IEC62619, IEC63056, UN38.3

Compatible Tower S3 configurations

Tower configuration Number of modules Total capacity
TS7 2 7.10 kWh
TS10 3 10.66 kWh
TS14 4 14.21 kWh
TS17 5 17.76 kWh
TS21 6 21.31 kWh
Important — system compatibility: The HV9637S is exclusively compatible with the Dyness Tower S3 series. Mixing components with the older Tower T-series is strictly prohibited and will result in system malfunctions and loss of warranty. Please verify your existing configuration before ordering.
Download Datasheet Download User Manual View Comparison Sheet
What is included in the package?

1× Dyness Tower S3 3.55 kWh battery module (HV9637S), installation screws and user manual. Please note: A separate Dyness Tower S3 BMS & Base unit is required for a fully operational home storage system — this is not included and must be ordered separately.

Which systems is this module compatible with?

The HV9637S is exclusively compatible with the Dyness Tower S3 series: configurations TS7, TS10, TS14, TS17 and TS21. Mixing components with the older Tower T-series is strictly prohibited and may result in system malfunctions and loss of warranty.

How many modules can be stacked per tower?

Per tower, a minimum of 2 modules (TS7 – 7.10 kWh) and a maximum of 6 modules (TS21 – 21.31 kWh) can be stacked. For larger projects, up to 12 complete towers can be connected in parallel for a maximum system capacity of 255.7 kWh.

What are the temperature requirements for this module?

Optimal operation between 18°C and 30°C ambient temperature. Charging is permitted from 0°C to 50°C; discharging from −10°C to 50°C. Always install the module in a dry, ventilated location, protected from direct sunlight and frost.

Why does the Dyness Tower S3 become more attractive as solar export rates decline?

As solar feed-in tariffs continue to decline across Europe and time-of-use energy pricing becomes more widespread, storing self-generated solar energy locally is becoming increasingly financially relevant. The Dyness Tower S3 enables you to use solar energy generated during the day in the evening and at night — reducing low-value grid exports and maximising self-consumption at the full retail electricity price. The actual financial benefit depends on your consumption profile, PV yield, energy contract and applicable feed-in tariffs. With a lifespan of up to 6,000 cycles and a scalable system capacity of up to 255.7 kWh, the Tower S3 is built for long-term returns.

Looking for a complete Tower S3 system or compatible accessories? Browse our complete Dyness range.

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Dyness Tower S3 3.55 kWh Battery Module (HV9637S) – General installation or product video